Ultrasonic scalpel bit, ultrasonic vibration propagation assembly and ultrasonic hemostasis and cutting system

Abstract

Disclosed is an ultrasonic hemostasis and cutting system, comprising an ultrasonic vibration propagation assembly. An ultrasonic scalpel bit (101) of the ultrasonic vibration propagation assembly comprises an ultrasonic scalpel tip (11), a connection portion (13), vibration node bosses (14) and a waveguide (15), wherein the ultrasonic scalpel tip (11) is arranged in front of the waveguide (15), the connection portion (13) is arranged behind the waveguide (15), the vibration node bosses (14) are arranged on the waveguide (15), the ultrasonic scalpel tip (11) is laterally bent at a pointed end thereof, and a vibration guide groove (12) is further provided on the ultrasonic scalpel bit (101). By designing the ultrasonic scalpel bit in a bent shape and converting a longitudinal ultrasonic vibration into a longitudinal torsional composite vibration, temperature uniformity inside a tissue being cut or coagulated can be improved, thereby improving the efficiency and safety of hemostasis and cutting.

1 . An ultrasonic scalpel bit ( 101 ), comprising:
 an ultrasonic scalpel tip ( 11 );   a connection portion ( 13 );   vibration node bosses ( 14 ); and   a waveguide ( 15 ),   wherein the ultrasonic scalpel tip ( 11 ) is arranged in front of the waveguide ( 15 ), the connection portion ( 13 ) is arranged behind the waveguide ( 15 ), and the vibration node bosses ( 14 ) are arranged on the waveguide ( 15 ),   wherein the ultrasonic scalpel tip ( 11 ) is laterally bent at a pointed end thereof, and wherein a vibration guide groove ( 12 ) is further provided on the ultrasonic scalpel bit ( 101 ).   
     
     
         2 . The ultrasonic scalpel bit ( 101 ) of  claim 1 , wherein the vibration guide groove ( 12 ) is located on the ultrasonic scalpel tip ( 11 ) at a rear end of the ultrasonic scalpel tip ( 11 ). 
     
     
         3 . The ultrasonic scalpel bit ( 101 ) of  claim 1 , wherein the vibration guide groove ( 12 ) is provided on the waveguide ( 15 ) and is located between the vibration node bosses ( 14 ). 
     
     
         4 . The ultrasonic scalpel bit ( 101 ) of  claim 1 , wherein the vibration guide groove ( 12 ) is configured as a beveled groove that advances spirally along an ultrasound axis, a pitch of which is uniform or non-uniform. 
     
     
         5 . The ultrasonic scalpel bit ( 101 ) of  claim 4 , wherein a ratio of the pitch of the vibration guide groove ( 12 ) to the wavelength of an ultrasonic vibration is 0.2 to 2. 
     
     
         6 . The ultrasonic scalpel bit ( 101 ) of  claim 4 , wherein the beveled groove is in the shape of a trapezoid, a semi-circle, or a triangle. 
     
     
         7 . (canceled) 
     
     
         8 . The ultrasonic scalpel bit ( 101 ) of  claim 4 , wherein multiple beveled grooves are arranged on the ultrasonic scalpel bit at equal intervals. 
     
     
         9 . The ultrasonic scalpel bit ( 101 ) of  claim 1 , wherein the ultrasonic scalpel tip ( 11 ) comprises a gradually-varying width in addition to being laterally bent at the pointed end thereof. 
     
     
         10 . The ultrasonic scalpel bit ( 101 ) of  claim 9 , wherein the gradually-varying width is a trapezoidal gradually-varying width. 
     
     
         11 . An ultrasonic vibration propagation assembly ( 202 ), comprising an ultrasonic scalpel bit of  claim 1 . 
     
     
         12 . The ultrasonic vibration propagation assembly ( 202 ) of  claim 11 , further comprising:
 a support structure; and   a clamping arm ( 102 ), wherein the clamping arm ( 102 ) is located at a front end of the support structure, and the support structure comprises an outer sleeve ( 106 ), an inner sleeve ( 107 ) and a lubrication cylinder ( 108 ), the ultrasonic scalpel bit ( 101 ) being located inside the lubrication cylinder ( 108 ).   
     
     
         13 . The ultrasonic vibration propagation assembly of  claim 12 , wherein the lubrication cylinder ( 108 ) is a polytetrafluoroethylene casing. 
     
     
         14 . An ultrasonic hemostasis and cutting system, comprising an ultrasonic vibration propagation assembly of  claim 11 . 
     
     
         15 . The ultrasonic hemostasis and cutting system of  claim 14 , further comprising:
 a host ( 201 );   a handle ( 203 );   an ultrasonic transducer ( 204 ) and   a foot switch ( 205 ) or a button,   wherein the handle ( 203 ) is operatively connected with the foot switch ( 205 ) or the button, the ultrasonic scalpel bit ( 101 ) of the ultrasonic vibration propagation assembly is removably connected to the ultrasonic transducer ( 204 ) via a connection portion ( 13 ) at a rear end of the ultrasonic scalpel bit, and the host ( 201 ) is electrically connected to the ultrasonic transducer ( 204 ) via a cable.